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US20070022920A1 - Steel pallet having paper top plate - Google Patents

Steel pallet having paper top plate Download PDF

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Publication number
US20070022920A1
US20070022920A1 US11/228,579 US22857905A US2007022920A1 US 20070022920 A1 US20070022920 A1 US 20070022920A1 US 22857905 A US22857905 A US 22857905A US 2007022920 A1 US2007022920 A1 US 2007022920A1
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US
United States
Prior art keywords
top plate
steel
paper top
members
corrugated boards
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/228,579
Inventor
In-Sook Suh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
In Dang Co Ltd
Original Assignee
In Dang Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by In Dang Co Ltd filed Critical In Dang Co Ltd
Assigned to IN DANG CO., LTD. reassignment IN DANG CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUH, IN-SOOK
Publication of US20070022920A1 publication Critical patent/US20070022920A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004—Rigid pallets without side walls
    • B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
    • B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
    • B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
    • B65D19/0012—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming a continuous plane contact surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00019—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00059—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00084—Materials for the non-integral separating spacer
    • B65D2519/00094—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00263—Overall construction of the pallet
    • B65D2519/00273—Overall construction of the pallet made of more than one piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00293—Overall construction of the load supporting surface made of more than one piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00303—Cell type, e.g. honeycomb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00323—Overall construction of the base surface made of more than one piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00368—Overall construction of the non-integral separating spacer
    • B65D2519/00373—Overall construction of the non-integral separating spacer whereby at least one spacer is made of one piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00407—Integral, e.g. ribs on the load supporting surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00412—Integral, e.g. ribs on the base surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00736—Details
    • B65D2519/0098—Dismountable elements
    • B65D2519/0099—Dismountable elements single dismountable pallet element, e.g. for replacement

Definitions

  • the present invention relates to a steel pallet having a paper top plate, and more particularly to a steel pallet having a paper top plate which can be conveniently exchanged, easily carried with its light weight, and can be mass-produced, thereby lowering the manufacturing cost, by forming the top plate so as to have a three layer structure of an upper corrugated board, a honeycomb panel, and a lower corrugated board.
  • pallets are used as means for supporting lower portions of freight when the freight is loaded or stored for transporting the freight between manufacturing lines and warehouses or between manufacturing lines in a factory.
  • the pallets should be compatible with freight transportation means such as railroads, freight vehicles, containers, and the like to transport freight promptly.
  • freight transportation means such as railroads, freight vehicles, containers, and the like to transport freight promptly.
  • some enterprises incorrectly use pallets which are intended only for enterprise use or for separate disposable pallets. Therefore, recently, efforts have been made to inform the field and supply the pallets, and ultimately for standardization. Further, enterprises are also finding ways to decrease inefficiency due to differences in the number of pallets used in high and low demand seasons and to decrease the stored number of empty pallets.
  • the pallet material currently used in Korea can be classified into four categories of wool, plastic, steel, and paper, which are also provided in Korean Industrial Standards. However, most of the pallet materials used in Korea are wood and plastic, and steel pallets are used extremely rarely.
  • the structural strength of the wood pallet is so vulnerable that when the weight of the loaded freight is excessive, the wood pallet is apt to be broken. Further, the plastic pallet needs a large mold to be manufactured, the cost thereof is high, and the plastic pallet does not have a satisfactory structure.
  • the conventional steel pallet is too heavy compared with the paper pallet, and the paper pallet is so vulnerable to moisture or the like that the overall strength thereof is weak.
  • an object of the present invention is to provide a steel pallet having a paper top plate wherein since only the paper top plate thereof uses a three layer structure with the corrugated boards stacked, the paper top plate can be easily exchanged or reused and can be easily carried with its light weight.
  • a steel pallet comprising: a paper top plate in which a plurality of corrugated boards are stacked; an upper steel support plate supporting a lower portion of the paper top plate, in which a plurality of first transverse members and a plurality of first longitudinal members are formed in rows and columns; a plurality of rectangular steel column members bonded to the bottom surface of the upper steel support plate; and a lower steel support plate bonded to bottom surfaces of the column members, in which a plurality of second transverse members and a plurality of second longitudinal members are formed in rows and columns.
  • the paper top plate has a structure in which an upper corrugated board, a honeycomb panel, and a lower corrugated board are sequentially stacked.
  • the upper and lower corrugated boards use double wall corrugated boards formed by attaching single-faced corrugated boards to double-faced corrugated boards.
  • FIG. 1 is a perspective view for showing a steel pallet having a paper top plate according to the present invention
  • FIG. 2 is an exploded perspective view of a paper top plate according to the present invention.
  • FIG. 3 is a view for showing the engaged state of a paper top plate according to the present invention.
  • FIG. 1 is a perspective view for showing a steel pallet having a paper top plate according to the present invention.
  • FIG. 2 is an exploded perspective view of a paper top plate according to the present invention.
  • FIG. 3 is a view for showing the engaged state of a paper top plate according to the present invention.
  • FIGS. 1 to 3 will be referred to together in the following description.
  • a steel pallet 1 includes a paper top plate 10 formed by stacking paper materials such as corrugated boards or the like.
  • upper and lower steel support plates 20 and 40 supporting the top plate 10 and rectangular column members 30 are formed of steel coated with melt zinc, the material thereof is not limited in the present invention and any steel material can be used.
  • the column members 30 preferably have rectangular cross-sections, but can have circular or any polygonal cross-sections and the shapes of the column members 30 are not limited in the present invention.
  • the upper and lower steel support plates 20 and 40 and the rectangular column members 30 are formed by bending rectangular zinc-coated steel plates with a forming machine, and are engaged by a engaging means such as rivets or the like.
  • the steel pallet 1 having the paper top plate 10 includes the paper top plate 10 in which corrugated boards are stacked so as to have multi-layers, the upper steel support plate 20 supporting the lower portion of the paper top plate 10 , in which a plurality of first transverse members (not provided with a reference numeral) and a plurality of first longitudinal members (not provided with a reference numeral) are formed in rows and columns, a plurality of rectangular steel column members 30 bonded to the bottom surface of the upper steel support plate 20 , and the lower steel support plate 40 bonded to the bottom surfaces of the column members 30 , in which a plurality of second transverse members (not provided with a reference numeral) and a plurality of second longitudinal members (not provided with a reference numeral) are formed in rows and columns.
  • the paper top plate 10 is bonded by an adhesive to the upper steel support plate 20 including the first transverse members and the first longitudinal members.
  • the paper top plate 10 has a structure in which an upper corrugated board 11 , a honeycomb panel 12 , and a lower corrugated board 13 are sequentially stacked.
  • the top plate can have more than or less than three layers and are not restricted to the stacked structure.
  • the upper and lower corrugated boards 11 and 13 use double wall corrugated boards (a thickness of about 5 mm) formed by attaching single-faced corrugated boards to double-faced corrugated boards, and, for example, are formed of corrugated boards of a combination of A flute and B flute, a combination of B flute and B flute, or a combination of E flute and B flute.
  • double wall corrugated boards of the combination of B flute and B flute the corrugated boards are not restricted in the present invention and double-faced corrugated boards or triple wall corrugated boards can be used.
  • honeycomb panel 12 formed between the upper and lower corrugated boards 11 and 13 is named after its shape similar to a hexagonal honeycomb.
  • the honeycomb panel 12 has a finite continuous structure of hexagonal hollow columns, and is formed of cells and cores.
  • a sandwich panel using the honeycomb structure is formed so as to have several ten times the strength of and about ten times the bending strength of a conventional panel.
  • the honeycomb panel is formed by bonding a standard paper sheet with a common adhesive so as to have a structure of honeycomb shape.
  • a honeycomb panel is well known in the art, further detailed description thereof will be omitted.
  • the top plate of the steel pallet since only the top plate of the steel pallet uses a three layer structure in which the corrugated boards are stacked, the top plate can be easily exchanged or reused and can be carried easily with its light weight.
  • the support plates are formed of steel coated with the melt zinc, the durability thereof is excellent and the environment can be kept sanitary.
  • the quality of the product is uniform due to automatic manufacture, and the products can be mass-produced, thereby lowering the manufacturing cost and can be reused.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)

Abstract

Disclosed is a steel pallet having a paper top plate which can be conveniently exchanged, easily carried with its light weight, and can be mass-produced, thereby lowering the manufacturing cost, by forming the top plate so as to have a three layer structure of an upper corrugated board, a honeycomb panel, and a lower corrugated board. The steel pallet comprises: a paper top plate in which a plurality of corrugated boards are stacked; an upper steel support plate supporting an lower portion of the paper top plate, in which a plurality of first transverse members and a plurality of first longitudinal members are formed in rows and columns; a plurality of rectangular steel column members bonded to the bottom surface of the upper steel support plate; and a lower steel support plate bonded to bottom surfaces of the column members, in which a plurality of second transverse members and a plurality of second longitudinal members are formed in rows and columns. The paper top plate has a structure in which an upper corrugated board, a honeycomb panel, and a lower corrugated board are sequentially stacked, and the upper and lower corrugated boards use double wall corrugated boards.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the invention
  • The present invention relates to a steel pallet having a paper top plate, and more particularly to a steel pallet having a paper top plate which can be conveniently exchanged, easily carried with its light weight, and can be mass-produced, thereby lowering the manufacturing cost, by forming the top plate so as to have a three layer structure of an upper corrugated board, a honeycomb panel, and a lower corrugated board.
  • 2. Description of the Prior Art
  • Generally, pallets are used as means for supporting lower portions of freight when the freight is loaded or stored for transporting the freight between manufacturing lines and warehouses or between manufacturing lines in a factory. The pallets should be compatible with freight transportation means such as railroads, freight vehicles, containers, and the like to transport freight promptly. However, since the pallets are not actually compatible with those transportation means, there are occasions in which some enterprises incorrectly use pallets which are intended only for enterprise use or for separate disposable pallets. Therefore, recently, efforts have been made to inform the field and supply the pallets, and ultimately for standardization. Further, enterprises are also finding ways to decrease inefficiency due to differences in the number of pallets used in high and low demand seasons and to decrease the stored number of empty pallets.
  • The pallet material currently used in Korea can be classified into four categories of wool, plastic, steel, and paper, which are also provided in Korean Industrial Standards. However, most of the pallet materials used in Korea are wood and plastic, and steel pallets are used extremely rarely.
  • However, the structural strength of the wood pallet is so vulnerable that when the weight of the loaded freight is excessive, the wood pallet is apt to be broken. Further, the plastic pallet needs a large mold to be manufactured, the cost thereof is high, and the plastic pallet does not have a satisfactory structure.
  • In order to supplement the above-mentioned problems, a steel pallet in which metal plates having predetermined widths and bent so as to have prominences and depressions are supported by a plurality of beams and are engaged at the upper and lower portions thereof by welding or bolts, has been suggested. On the other hand, a paper pallet, which is useful for environment protection, can be reused with collected corrugated boards, and is light, has been suggested.
  • However, the conventional steel pallet is too heavy compared with the paper pallet, and the paper pallet is so vulnerable to moisture or the like that the overall strength thereof is weak.
    • SUMMARY OF THE INVENTION
  • Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a steel pallet having a paper top plate wherein since only the paper top plate thereof uses a three layer structure with the corrugated boards stacked, the paper top plate can be easily exchanged or reused and can be easily carried with its light weight.
  • It is another object of the present invention to provide a steel pallet having a paper top plate wherein since support plates are formed of steel coated with melt zinc, the durability thereof is excellent and the environment can be kept sanitary.
  • It is still another object of the present invention to provide a steel pallet having a paper top plate wherein the quality thereof is uniform due to automatic manufacture and which can be mass-produced, thereby lowering the manufacturing cost and can be reused.
  • In order to accomplish these objects, there is provided a steel pallet comprising: a paper top plate in which a plurality of corrugated boards are stacked; an upper steel support plate supporting a lower portion of the paper top plate, in which a plurality of first transverse members and a plurality of first longitudinal members are formed in rows and columns; a plurality of rectangular steel column members bonded to the bottom surface of the upper steel support plate; and a lower steel support plate bonded to bottom surfaces of the column members, in which a plurality of second transverse members and a plurality of second longitudinal members are formed in rows and columns.
  • Preferably, the paper top plate has a structure in which an upper corrugated board, a honeycomb panel, and a lower corrugated board are sequentially stacked.
  • Preferably, the upper and lower corrugated boards use double wall corrugated boards formed by attaching single-faced corrugated boards to double-faced corrugated boards.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
  • FIG. 1 is a perspective view for showing a steel pallet having a paper top plate according to the present invention;
  • FIG. 2 is an exploded perspective view of a paper top plate according to the present invention; and
  • FIG. 3 is a view for showing the engaged state of a paper top plate according to the present invention.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
  • FIG. 1 is a perspective view for showing a steel pallet having a paper top plate according to the present invention. FIG. 2 is an exploded perspective view of a paper top plate according to the present invention. FIG. 3 is a view for showing the engaged state of a paper top plate according to the present invention. For convenience sake, FIGS. 1 to 3 will be referred to together in the following description.
  • First, a steel pallet 1 according to the present invention includes a paper top plate 10 formed by stacking paper materials such as corrugated boards or the like. Although it is preferable that upper and lower steel support plates 20 and 40 supporting the top plate 10 and rectangular column members 30 are formed of steel coated with melt zinc, the material thereof is not limited in the present invention and any steel material can be used. The column members 30 preferably have rectangular cross-sections, but can have circular or any polygonal cross-sections and the shapes of the column members 30 are not limited in the present invention. The upper and lower steel support plates 20 and 40 and the rectangular column members 30 are formed by bending rectangular zinc-coated steel plates with a forming machine, and are engaged by a engaging means such as rivets or the like.
  • As shown in FIG. 1, the steel pallet 1 having the paper top plate 10 according to the present invention includes the paper top plate 10 in which corrugated boards are stacked so as to have multi-layers, the upper steel support plate 20 supporting the lower portion of the paper top plate 10, in which a plurality of first transverse members (not provided with a reference numeral) and a plurality of first longitudinal members (not provided with a reference numeral) are formed in rows and columns, a plurality of rectangular steel column members 30 bonded to the bottom surface of the upper steel support plate 20, and the lower steel support plate 40 bonded to the bottom surfaces of the column members 30, in which a plurality of second transverse members (not provided with a reference numeral) and a plurality of second longitudinal members (not provided with a reference numeral) are formed in rows and columns.
  • The paper top plate 10 is bonded by an adhesive to the upper steel support plate 20 including the first transverse members and the first longitudinal members. The paper top plate 10 has a structure in which an upper corrugated board 11, a honeycomb panel 12, and a lower corrugated board 13 are sequentially stacked. Although the present invention suggests that the top plate have a stacked structure of three layers, the top plate can have more than or less than three layers and are not restricted to the stacked structure.
  • Preferably, the upper and lower corrugated boards 11 and 13 use double wall corrugated boards (a thickness of about 5 mm) formed by attaching single-faced corrugated boards to double-faced corrugated boards, and, for example, are formed of corrugated boards of a combination of A flute and B flute, a combination of B flute and B flute, or a combination of E flute and B flute. Although the present invention preferably employs double wall corrugated boards of the combination of B flute and B flute, the corrugated boards are not restricted in the present invention and double-faced corrugated boards or triple wall corrugated boards can be used.
  • Further, the honeycomb panel 12 formed between the upper and lower corrugated boards 11 and 13 is named after its shape similar to a hexagonal honeycomb. The honeycomb panel 12 has a finite continuous structure of hexagonal hollow columns, and is formed of cells and cores. A sandwich panel using the honeycomb structure is formed so as to have several ten times the strength of and about ten times the bending strength of a conventional panel. In other words, the honeycomb panel is formed by bonding a standard paper sheet with a common adhesive so as to have a structure of honeycomb shape. Such a honeycomb panel is well known in the art, further detailed description thereof will be omitted.
  • When the steel pallet including the top plate in which the plurality of corrugated boards are stacked is actually used, after freight, electronic appliances, or the like are loaded on the paper top plate, they are bound by a binding means to be carried or preserved.
  • According to the steel pallet having the paper top plate according to the present invention, since only the top plate of the steel pallet uses a three layer structure in which the corrugated boards are stacked, the top plate can be easily exchanged or reused and can be carried easily with its light weight.
  • Further, since the support plates are formed of steel coated with the melt zinc, the durability thereof is excellent and the environment can be kept sanitary.
  • Furthermore, the quality of the product is uniform due to automatic manufacture, and the products can be mass-produced, thereby lowering the manufacturing cost and can be reused.
  • Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims (3)

1. A steel pallet comprising:
a paper top plate in which a plurality of corrugated boards are stacked;
an upper steel support plate supporting a lower portion of the paper top plate, in which a plurality of first transverse members and a plurality of first longitudinal members are formed in rows and columns;
a plurality of rectangular steel column members bonded to the bottom surface of the upper steel support plate; and
a lower steel support plate bonded to bottom surfaces of the column members, in which a plurality of second transverse members and a plurality of second longitudinal members are formed in rows and columns.
2. A steel pallet according to claim 1, wherein the paper top plate has a structure in which an upper corrugated board, a honeycomb panel, and a lower corrugated board are sequentially stacked.
3. A steel pallet according to claim 2, wherein the upper and lower corrugated boards use double wall corrugated boards formed by attaching single-faced corrugated boards to double-faced corrugated boards.
US11/228,579 2005-07-29 2005-09-16 Steel pallet having paper top plate Abandoned US20070022920A1 (en)

Applications Claiming Priority (2)

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KR20-2005-0022056 2005-07-29
KR20-2005-0022056U KR200399803Y1 (en) 2005-07-29 2005-07-29 Steel Pallet Having Paper Top Plate

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN103253423A (en) * 2012-02-15 2013-08-21 合肥杰事杰新材料股份有限公司 Plastic tray
CN104015980A (en) * 2014-06-04 2014-09-03 秦皇岛永诚科技开发有限公司 Environmentally-friendly light metal tray
US20170107013A1 (en) * 2015-10-16 2017-04-20 Katsutoshi Yoshifusa Cargo pallet

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Publication number Priority date Publication date Assignee Title
US3709161A (en) * 1971-04-06 1973-01-09 Narad Inc Honeycomb pallet
US3762344A (en) * 1972-04-26 1973-10-02 E Chez Metal pallet and leg construction therefor
US3934805A (en) * 1973-10-03 1976-01-27 Domtar Limited Appliance base
US5269219A (en) * 1990-12-26 1993-12-14 Damage Prevention Products Inc. Pallet design using paper materials
US5517926A (en) * 1994-09-16 1996-05-21 National Pallet L.L.C. Collapsible pallet
US5687653A (en) * 1995-03-15 1997-11-18 Bumgarner; Timothy R. Modular metal pallet

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Publication number Priority date Publication date Assignee Title
US3709161A (en) * 1971-04-06 1973-01-09 Narad Inc Honeycomb pallet
US3762344A (en) * 1972-04-26 1973-10-02 E Chez Metal pallet and leg construction therefor
US3934805A (en) * 1973-10-03 1976-01-27 Domtar Limited Appliance base
US5269219A (en) * 1990-12-26 1993-12-14 Damage Prevention Products Inc. Pallet design using paper materials
US5517926A (en) * 1994-09-16 1996-05-21 National Pallet L.L.C. Collapsible pallet
US5687653A (en) * 1995-03-15 1997-11-18 Bumgarner; Timothy R. Modular metal pallet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103253423A (en) * 2012-02-15 2013-08-21 合肥杰事杰新材料股份有限公司 Plastic tray
CN104015980A (en) * 2014-06-04 2014-09-03 秦皇岛永诚科技开发有限公司 Environmentally-friendly light metal tray
US20170107013A1 (en) * 2015-10-16 2017-04-20 Katsutoshi Yoshifusa Cargo pallet
US9834334B2 (en) * 2015-10-16 2017-12-05 Katsutoshi Yoshifusa Cargo pallet
TWI632065B (en) * 2015-10-16 2018-08-11 吉房克敏 Loading pallet

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